Novel water pump structure and thermos bottle with same

Abstract

The utility model discloses a novel water pump structure which comprises a water inlet pipe, a pump shell and an impeller, and one end of the water inlet pipe is used for being communicated with the interior of an inner container. A water inlet channel is formed in the water inlet pipe; one end of the pump shell is detachably connected with the other end of the water inlet pipe; a pump cavity communicated with the water inlet channel is formed in the pump shell; a water outlet communicated with the pump cavity is formed in the pump shell; and the impeller is rotationally arranged in the pump cavity. The water inlet pipe, the pump shell and the impeller are all made of stainless steel materials. Through the arrangement, when boiled water flows through the water inlet pipe, the pump shell and the impeller, no harmful substance is separated out, so that the safety and sanitation of the boiled water are ensured, and meanwhile, the risk that the boiled water generates peculiar smell is reduced. In addition, the utility model further provides a thermos bottle with the novel water pump structure.

Description

Technical Field

[0001] The utility model relates to the field of water pumps, and particularly to a novel water pump structure and a thermos flask having the same. Background Art

[0002] The information provided in this part is only the background information related to the present application to facilitate those skilled in the art to understand the present application more thoroughly and accurately, and it is not necessarily the prior art.

[0003] In the existing electric thermos flasks on the market, in order to achieve automatic water discharge, a water pump is usually provided at the bottom. Among them, the water pump is a centrifugal pump, which includes a pump casing and an impeller. The pump casing is integrally formed with a water inlet and a water outlet. A pump chamber is formed inside the pump casing, and both the water inlet and the water outlet are communicated with the pump chamber; the impeller is rotatably arranged in the pump chamber. Thus, when the centrifugal pump is working normally, by driving the impeller to rotate to form a negative pressure in the pump chamber, the hot water in the inner liner of the thermos flask can enter the pump chamber through the water inlet, and at the same time, under the action of the centrifugal force of the impeller, the water in the pump chamber can be discharged through the water outlet.

[0004] Among them, both the pump casing and the impeller are made of plastic materials. Since there are many types of plastics and the market quality is uneven, various additives will be added during the plastic production process. When boiling water flows through the pump casing and the impeller, it is easy to precipitate various toxic components under the action of the high temperature of the boiling water and dissolve into the boiling water, which not only causes the generation of peculiar smell, but also has a great impact on human health when drinking the boiling water, and there are certain safety hazards. Summary of the Utility Model

[0005] In order to overcome the defects of the above-mentioned prior art, the utility model provides a novel water pump structure and a thermos flask having the same. The water inlet pipe, the pump casing and the impeller are all made of stainless steel materials. When boiling water flows through the water inlet pipe, the pump casing and the impeller, no harmful substances will be precipitated, thus ensuring the safety and hygiene of the boiling water, and at the same time reducing the risk of peculiar smell generation of the boiling water.

[0006] The technical solution adopted by the utility model to solve its problems is:

[0007] A novel water pump structure, comprising:

[0008] A water inlet pipe, one end of which is used to communicate with the inside of the inner liner; an inlet channel is formed inside the water inlet pipe;

[0009] A pump casing, one end of which is detachably connected to the other end of the water inlet pipe; a pump chamber communicating with the inlet channel is formed inside the pump casing; a water outlet communicating with the pump chamber is provided on the pump casing;

[0010] An impeller, which is rotatably arranged in the pump chamber;

[0011] Among them, the water inlet pipe, the pump housing, and the impeller are all made of stainless steel.

[0012] Furthermore, the pump housing and the water inlet pipe are detachably connected by means of threaded connection, bolt connection, or snap connection.

[0013] Furthermore, the pump housing and the water inlet pipe are detachably connected by threaded connection, where:

[0014] One end of the water inlet pipe close to the pump housing is provided with a first seat body. An external thread is provided on the outer side wall of the first seat body, and an internal thread matching the external thread is provided on the inner side wall of one end of the pump housing; a first annular convex ring is further provided on the outer side wall of the first seat body, and a second annular convex ring is provided on the outer side wall of one end of the pump housing;

[0015] The pump housing and the water inlet pipe are detachably connected through the thread matching between the internal thread and the external thread, and the first annular convex ring abuts against the second annular convex ring to achieve limit fixation.

[0016] Furthermore, a first sealing ring is further included. The first sealing ring is arranged between the first annular convex ring and the second annular convex ring to achieve waterproof sealing.

[0017] Furthermore, the pump housing and the water inlet pipe are detachably connected by bolt connection, where:

[0018] One end of the water inlet pipe close to the pump housing is provided with a second seat body. A third annular convex ring is provided on the outer side wall of the second seat body, and a first mounting hole is provided on the third annular convex ring;

[0019] A fourth annular convex ring is provided on the outer side wall of one end of the pump housing, and a second mounting hole is provided on the fourth annular convex ring. The first mounting hole and the second mounting hole are bolt-connected to achieve fixation.

[0020] Furthermore, a second sealing ring is further included. The second sealing ring is arranged between the third annular convex ring and the fourth annular convex ring to achieve waterproof sealing.

[0021] Furthermore, a cover plate connected to the other end of the pump housing and a driving motor installed on the cover plate are further included. The output shaft of the driving motor sequentially passes through the cover plate and the pump housing and extends into the pump cavity. The impeller is directly or indirectly sleeved on the output shaft of the driving motor to achieve transmission connection.

[0022] Furthermore, when the output shaft of the driving motor is made of stainless steel, the impeller is directly sleeved on the output shaft;

[0023] Or,

[0024] It further includes a connecting shaft sleeve sleeved on the output shaft of the drive motor and made of stainless steel, and the impeller is sleeved on the connecting shaft sleeve.

[0025] Furthermore, it also includes an oil seal, and the oil seal is sleeved on the output shaft of the drive motor or the connecting shaft sleeve and abuts against the cover plate and the pump housing respectively to achieve waterproof sealing.

[0026] In addition, the present utility model also provides a thermos flask, which includes the above-mentioned water pump structure, a housing, and an inner container arranged in the housing, wherein:

[0027] A first water outlet hole communicating with its interior is opened at the bottom of the inner container, and the first water outlet hole is communicated with the water inlet pipe through a first water outlet pipe;

[0028] A second water outlet hole is opened on the housing, and the second water outlet hole is communicated with the water outlet of the pump housing through a second water outlet pipe;

[0029] Both the first water outlet pipe and the second water outlet pipe are made of stainless steel.

[0030] To sum up, the present utility model provides a novel water pump structure and a thermos flask with the same. The water inlet pipe, the pump housing, and the impeller in the water pump structure are all made of stainless steel. When boiling water flows through the water inlet pipe, the pump housing, and the impeller, no harmful substances are precipitated, thus ensuring the safety and hygiene of the boiling water and reducing the risk of the boiling water generating peculiar smell. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an exploded schematic view of the water pump structure in the first embodiment of the present utility model;

[0032] Figure 2 is a schematic structural view of the water inlet pipe in the water pump structure in the first embodiment of the present utility model;

[0033] Figure 3 is a schematic structural view of the pump housing in the water pump structure in the first embodiment of the present utility model;

[0034] Figure 4 is Figure 3 a structural view from another perspective;

[0035] Figure 5 is a schematic cross-sectional view of the oil seal in the water pump structure in the first embodiment of the present utility model;

[0036] Figure 6 is a schematic structural view of the water pump structure in the first embodiment of the present utility model;

[0037] Figure 7 It is a schematic cross-sectional view of the water pump structure in the first embodiment of the present utility model;

[0038] Figure 8 It is a schematic structural view of the water pump structure in the second embodiment of the present utility model;

[0039] Figure 9 It is a schematic cross-sectional view of the water pump structure in the second embodiment of the present utility model;

[0040] Figure 10 It is a schematic cross-sectional view of the water pump structure in the third embodiment of the present utility model;

[0041] Figure 11 It is a schematic cross-sectional view of the water pump structure in the fourth embodiment of the present utility model.

[0042] Among them, the meanings of the reference numerals are as follows:

[0043] 1, water inlet pipe; 11, water inlet pipe body; 12, first seat body; 121, external thread; 122, first annular convex ring; 1221, annular groove; 13, second seat body; 131, third annular convex ring; 1311, first installation hole; 2, pump housing; 21, pump cavity; 22, internal thread; 23, second annular convex ring; 24, water outlet; 25, fifth annular convex ring; 251, third installation hole; 26, installation groove; 27, fourth annular convex ring; 271, second installation hole; 3, impeller; 4, first sealing ring; 5, cover plate; 51, fourth installation hole; 52, boss; 6, driving motor; 61, output shaft; 7, oil seal; 71, oil seal body; 72, upper lip; 73, lower lip; 74, sixth annular convex ring; 75, first convex ring; 76, second convex ring; 8, gasket; 91, second sealing ring; 92, connecting shaft sleeve. Specific embodiments

[0044] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0045] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred module or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model.

[0047] Embodiment 1

[0048] Referring to Figures 1-7 , this utility model provides a novel water pump structure, which is a centrifugal pump and is horizontally arranged, so as to reduce the occupied space at the bottom. Specifically, the water pump structure includes a water inlet pipe 1, a pump casing 2 and an impeller 3. The water inlet pipe 1 is bent and its top end is connected to the inside of the inner tank. An inlet water passage communicating with the inner tank is formed inside the water inlet pipe 1. One end of the pump casing 2 is detachably connected to the other end of the water inlet pipe 1. A pump chamber 21 communicating with the inlet water passage is formed inside the pump casing 2. A water outlet 24 communicating with the pump chamber 21 is also provided on the side of the pump casing 2. The impeller 3 is rotatably arranged in the pump chamber 21 and is coaxially arranged with the pump casing 2.

[0049] Thus, when the water pump is working normally, by driving the impeller 3 to rotate to form a negative pressure in the pump chamber 21, the boiling water in the inner tank can enter the pump chamber 21 through the water inlet pipe 1. At the same time, under the centrifugal force of the impeller 3, the water in the pump chamber 21 can be discharged through the water outlet 24 for users to drink.

[0050] Among them, the water inlet pipe 1, the pump casing 2 and the impeller 3 are all made of stainless steel. With such a setting, when the boiling water flows through the water inlet pipe 1, the pump casing 2 and the impeller 3, no harmful substances are precipitated, thus ensuring the safety and hygiene of the boiling water and at the same time reducing the risk of the boiling water generating peculiar smells.

[0051] Furthermore, the pump casing 2 and the water inlet pipe 1 are detachably connected by a threaded connection method. Specifically, one end of the water inlet pipe 1 close to the pump casing 2 is provided with a first seat body 12. An external thread 121 is provided on the outer side wall of the first seat body 12. An internal thread 22 matching with the external thread 121 is provided on the inner side wall of one end of the pump casing 2. Thus, the pump casing 2 and the water inlet pipe 1 can be detachably connected through the threaded cooperation between the internal thread 22 and the external thread 121. In addition, a first annular convex ring 122 is also provided on the outer side wall of the first seat body 12, and a second annular convex ring 23 is provided on the outer side wall of one end of the pump casing 2. When the water inlet pipe 1 and the pump casing 2 are in threaded cooperation, the first annular convex ring 122 can be abutted against the second annular convex ring 23 to achieve limit fixation.

[0052] It should be noted that in other embodiments, the water inlet pipe 1 and the pump casing 2 can also be detachably connected by a bolt connection method or a snap connection method, and there is no limitation here.

[0053] Among them, to avoid water leakage, the water pump structure further includes a first sealing ring 4, which is arranged between the first annular convex ring 122 and the second annular convex ring 23 to achieve waterproof sealing. Specifically, a circular groove 1221 is formed on the first annular convex ring 122, and the first sealing ring 4 is arranged in the circular groove 1221; when the water inlet pipe 1 is threadedly engaged with the pump housing 2 until the first annular convex ring 122 abuts against the second annular convex ring 23, the first sealing ring 4 can respectively abut against the first annular convex ring 122 and the second annular convex ring 23 to achieve waterproof sealing.

[0054] Furthermore, the water pump structure further includes a cover plate 5 connected to the other end of the pump housing 2 and a drive motor 6 installed on the cover plate 5; specifically, a fifth annular convex ring 25 is further provided on the outer side wall of the other end of the pump housing 2, and a plurality of third mounting holes 251 are arranged at intervals along the circumferential direction on the fifth annular convex ring 25, and a plurality of fourth mounting holes 51 corresponding to the plurality of third mounting holes 251 are arranged at intervals along the circumferential direction on the cover plate 5; thus, the connection and fixation between the two can be achieved by passing bolts through the third mounting holes 251 and the fourth mounting holes 51 and locking them with nuts. The drive motor 6 is also fixed on the cover plate 5 by means of bolt connection. Among them, the output shaft 61 of the drive motor 6 sequentially passes through the cover plate 5 and the pump housing 2 and extends into the pump chamber 21, and the impeller 3 is sleeved on the output shaft 61 to achieve transmission connection. Thus, when the drive motor 6 is started, it can drive the output shaft 61 to rotate, and then drive the impeller 3 to rotate to achieve pumping.

[0055] Preferably, in this embodiment, the output shaft 61 of the drive motor 6 is made of stainless steel material, so that the impeller 3 can be directly sleeved on the output shaft 61 and assembled by interference fit. Such a setting makes it possible that when water enters the pump chamber 21, all the components in contact with water are made of food-grade materials, so as to prevent the precipitation of harmful substances and ensure the cleanliness and hygiene of the water quality.

[0056] Further, to achieve waterproof sealing, the water pump structure further includes an oil seal 7, which is sleeved on the output shaft 61 and respectively abuts against the cover plate 5 and the pump housing 2 to achieve waterproof sealing. Specifically, the oil seal 7 includes an annular oil seal body 71, the top of the oil seal body 71 is provided with an upper lip 72, and the upper lip 72 extends inward and obliquely upward from the oil seal body 71; the inner side wall of the oil seal body 71 is provided with a lower lip 73, and the lower lip 73 extends inward and obliquely upward from the oil seal body 71; the upper lip 72 and the lower lip 73 both abut against the outer side wall of the output shaft 61 to achieve waterproof sealing.

[0057] Further, a sixth annular convex ring 74 is provided at the bottom of the oil seal body 71. A clamping groove is formed by enclosing between the oil seal body 71 and the sixth annular convex ring 74. A boss 52 is provided on the cover plate 5. The oil seal 7 is sleeved on the boss 52 through the clamping groove. Additionally, an installation groove 26 for accommodating the oil seal 7 is formed at one end of the pump housing 2 facing the cover plate 5. A first convex ring 75 surrounding the upper lip 72 is provided at the top of the oil seal body 71. The first convex ring 75 abuts against the inner top wall of the installation groove 26 to form a waterproof seal. A second convex ring 76 is annularly provided on the outer side of the oil seal body 71. The second convex ring 76 abuts against the inner side wall of the installation groove 26 to form a waterproof seal.

[0058] In this embodiment, the oil seal 7 is made of fluororubber material, so that it will not adsorb peculiar smell, thus ensuring that the boiled water has no peculiar smell.

[0059] Additionally, the water pump structure further includes a gasket 8 provided between the pump housing 2 and the cover plate 5, thereby improving the connection sealing performance between the two.

[0060] In addition, the present utility model further provides a thermos flask, which includes the above water pump structure, a housing, and an inner liner provided in the housing. A first water outlet hole communicating with its interior is formed at the bottom of the inner liner. The first water outlet hole is communicated with the water inlet pipe 1 through a first water outlet pipe. A second water outlet hole is formed on the housing. The second water outlet hole is communicated with the water outlet 24 of the pump housing 2 through a second water outlet pipe. Among them, both the first water outlet pipe and the second water outlet pipe are made of stainless steel material.

[0061] Thus, when the water pump works, the boiled water in the inner liner can flow out successively through the first water outlet pipe, the water inlet pipe 1, the pump housing 2, and the second water outlet pipe. All the places where the boiled water flows through are made of stainless steel material, and no harmful substances will be precipitated, thus ensuring the safety and hygiene of the boiled water, and at the same time reducing the risk of the boiled water generating peculiar smell.

[0062] Embodiment Two

[0063] Refer to Figures 8-9 , the difference between the water pump structure in this embodiment and that in Embodiment One is that the water pump structure is arranged vertically; among them, the water inlet pipe 1 is arranged vertically. The working principle of the water pump structure is the same as that of the water pump structure in Embodiment One, so it will not be elaborated here.

[0064] Embodiment Three

[0065] Refer to Figure 10, the difference between the water pump structure in this embodiment and that in the first embodiment is that the inlet pipe 1 and the pump housing 2 in this water pump structure are detachably connected by means of bolt connection. Specifically, one end of the inlet pipe 1 close to the pump housing 2 is provided with a second seat body 13, the outer side wall of the second seat body 13 is provided with a third annular convex ring 131, and a plurality of first mounting holes 1311 are spaced apart in the circumferential direction on the third annular convex ring 131; the outer side wall of one end of the pump housing 2 is provided with a fourth annular convex ring 27, and a plurality of second mounting holes 271 are spaced apart in the circumferential direction on the fourth annular convex ring 27. The plurality of second mounting holes 271 correspond to the plurality of first mounting holes 1311 one by one, and the first mounting holes 1311 and the second mounting holes 271 are bolted together to achieve fixation.

[0066] Similarly, in order to avoid water leakage, the water pump structure further includes a second sealing ring 91, and the second sealing ring 91 is arranged between the third annular convex ring 131 and the fourth annular convex ring 27 to achieve waterproof sealing. Among them, the sealing method of the second sealing ring 91 is the same as that of the first sealing ring 4, so it will not be elaborated here.

[0067] Embodiment Four

[0068] Refer to Figure 11 , the difference between the water pump structure in this embodiment and that in the third embodiment is that the impeller 3 is indirectly sleeved on the output shaft 61 of the driving motor 6; specifically, it further includes a connecting shaft sleeve 92 sleeved on the output shaft 61 of the driving motor 6 and made of stainless steel material, and the impeller 3 is sleeved on the connecting shaft sleeve 92. Among them, one end of the connecting shaft sleeve 92 is sleeved on the output shaft 61 and is assembled and fixed by means of interference fit; a threaded hole is opened at the other end of the connecting shaft sleeve 92, and the impeller 3 can be assembled and fixed to the connecting shaft sleeve 92 by passing a bolt through the impeller 3 and threadedly connecting it to the threaded hole.

[0069] Thus, by sleeving the connecting shaft sleeve 92 on the output shaft 61, it is not necessary to set the output shaft 61 as a stainless steel shaft, the processing technology is simpler, the processing cost is lower, and no harmful substances will be precipitated when the connecting shaft sleeve 92 is in contact with water, ensuring the cleanliness and hygiene of the water quality.

[0070] Among them, the 7 oil seals are sleeved on the connecting bushing 92 and respectively abut against the cover plate 5 and the pump housing 2 to achieve waterproof sealing; specifically, the upper lip 72 and the lower lip 73 of the oil seal 7 both abut against the outer wall of the connecting bushing 92 to achieve waterproof sealing, and the sealing method of the oil seal 7 with the cover plate 5 and the pump housing 2 is the same as that in the first embodiment, so it will not be elaborated here. To sum up, a novel water pump structure and a thermos bottle having the same provided by the present invention, the water inlet pipe 1, the pump housing 2 and the impeller 3 in the water pump structure are all made of stainless steel. When boiling water flows through the water inlet pipe 1, the pump housing 2 and the impeller 3, no harmful substances are precipitated, thus ensuring the safety and hygiene of the boiling water and reducing the risk of the boiling water producing peculiar smell.

[0071] It should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the module or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0072] In addition, in the description of the present invention, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically defined.

[0073] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A novel water pump structure, characterized in that, Comprising: A water inlet pipe, one end of which is used to communicate with the interior of the inner tank; an inlet water channel is formed inside the water inlet pipe; A pump housing, one end of which is detachably connected to the other end of the water inlet pipe; a pump chamber communicating with the inlet water channel is formed inside the pump housing; a water outlet communicating with the pump chamber is provided on the pump housing; An impeller, which is rotatably arranged in the pump chamber; Wherein, the water inlet pipe, the pump housing and the impeller are all made of stainless steel.

2. The water pump structure according to claim 1, characterized in that, The pump housing and the water inlet pipe are detachably connected by a threaded connection method, a bolt connection method or a snap connection method.

3. The water pump structure according to claim 2, wherein, The pump housing and the water inlet pipe are detachably connected by a threaded connection, wherein: One end of the water inlet pipe close to the pump housing is provided with a first seat body, an external thread is provided on the outer side wall of the first seat body, and an internal thread matching the external thread is provided on the inner side wall of one end of the pump housing; a first annular convex ring is further provided on the outer side wall of the first seat body, and a second annular convex ring is provided on the outer side wall of one end of the pump housing; The pump housing and the water inlet pipe are detachably connected by the thread matching between the internal thread and the external thread, and the first annular convex ring abuts against the second annular convex ring to achieve limit fixation.

4. The water pump structure according to claim 3, characterized in that, It further includes a first sealing ring, and the first sealing ring is arranged between the first annular convex ring and the second annular convex ring to achieve waterproof sealing.

5. The water pump structure according to claim 2, wherein The pump housing and the water inlet pipe are detachably connected by bolts, wherein: One end of the water inlet pipe close to the pump housing is provided with a second seat body, a third annular convex ring is provided on the outer side wall of the second seat body, and a first mounting hole is provided on the third annular convex ring; A fourth annular convex ring is provided on the outer side wall of one end of the pump housing, a second mounting hole is provided on the fourth annular convex ring, and the first mounting hole and the second mounting hole are bolt-connected to achieve fixation.

6. The water pump structure according to claim 5, characterized in that, It further includes a second sealing ring, and the second sealing ring is arranged between the third annular convex ring and the fourth annular convex ring to achieve waterproof sealing.

7. The water pump structure according to any one of claims 1-6, characterized in that, It further includes a cover plate connected to the other end of the pump housing and a driving motor installed on the cover plate. The output shaft of the driving motor sequentially passes through the cover plate and the pump housing and extends into the pump chamber. The impeller is directly or indirectly sleeved on the output shaft of the driving motor to achieve transmission connection.

8. The water pump structure according to claim 7, wherein, When the output shaft of the driving motor is made of stainless steel, the impeller is directly sleeved on the output shaft; Or, It further includes a connecting shaft sleeve sleeved on the output shaft of the driving motor and made of stainless steel, and the impeller is sleeved on the connecting shaft sleeve.

9. The water pump structure according to claim 8, wherein, It further includes an oil seal, and the oil seal is sleeved on the output shaft of the driving motor or the connecting shaft sleeve and abuts against the cover plate and the pump housing respectively to achieve waterproof sealing.

10. A thermos flask, characterized in that, Comprising the water pump structure according to any one of claims 1-9, a housing and an inner tank arranged in the housing, wherein: A first water outlet hole communicating with its interior is opened at the bottom of the inner tank, and the first water outlet hole is communicated with the water inlet pipe through a first water outlet pipe; A second water outlet hole is formed in the outer shell, and the second water outlet hole is communicated with the water outlet of the pump housing through a second water outlet pipe; Both the first water outlet pipe and the second water outlet pipe are made of stainless steel.

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